Mass Update Products attribute in Magento 2

This post demonstrates the most optimized method to update product attributes for a substantial number of products.

For instance, if you’ve added a new attribute with the attribute code ‘wk_shipping’ and need to assign 50 units to it across multiple products.

Use the following code to save attribute value for products:

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$array_product = [1,2,3,4,5]; //product Ids
$value = 50; //amount
$productActionObject = $objectManager->create('Magento\Catalog\Model\Product\Action');
$productActionObject->updateAttributes($array_product, array('wk_shipping' => $value), 0);

The function updateAttributes prototype is as such:
/**
* Update attribute values for entity list per store
*
* @param array $productIds
* @param array $attrData
* @param int $storeId
* @return $this
*/
public function updateAttributes($productIds, $attrData, $storeId);

Please check the below images for reference. The value for the product attribute “wk_shipping” was initially set to $99. After running the above code, the value for the same attribute is updated to the given value, that is, $50 in our case.

Before:

After:

I have tried to make a standalone script that is ready to use. You can improve the code by directly injecting the dependency of this class Magento\Catalog\Model\Product\Action in constructor. Hope, this may be helpful in your journey with Magento 2.